bullet tumbler media

Bullet tumbling? If you mean brass cleaning, you have a couple of options:

Princess Auto has some crushed walnut, as well as most pet stores will have walnut and corn cob media for pet bedding.

Nu-finnish car wax is good for giving the brass some shine as is Brasso.

Cheers
 
Just visit the corner pet store and buy either "corn cob bedding" (I use Sun Seed 'Sunthing Special brand') or ground english walnut shells (I use Zilla brand). These can be found in even every mall sized little pet stores for a fraction of the price of the same stuff sold in gun stores under different names, and are often sold in 50 pound sacks.

I use the Nu Finish too.
 
I don't think my dad ever replaced his walnut media. I might be exaggerating, but not by much. It would get as black and dirty as coal, and he'd still run buckets of brass through it.

Walnut especially doesn't seem to loose its effectiveness much even after putting 1,000s of casings through it. But once it starts getting really dark coloured, the concentration of lead toxins from the spent primers have built up to the point where you must treat it like toxic waste. Since corn cob is so cheap at the pet store, I change mine fairly regularly just to keep toxin concentrations down - perhaps a change every 10 thousand .45 casings, I'm not sure because I do it by look. When it gets dark with lots of small dusty particles (yes I do use dryer sheets too), I change it.

You'll probably get as many answers as there are reloaders. Like I said, my dad was in the "change it? Huh?" category ;)
 
Place in Mississaua called Spectrum Abrasives, get the finest screenig of corn cob they have, won't plug the flash holes.....Product is made by " The Andersons" about $27 a 40 lb bag. I add mineral spirits and car wax, 3/4 of a cup for a large dillon tumbler of mineral spirits andabout 1/4 cup of turtle wax, run it alone for about 1/2 an hour and you are off to the races.
 
X 2 on the Abrasives. I get mine from a company ( Manus Abrasives) who supplies abrasive blasting materials like crushed walnut shells and corn cob. We have access to fine, medium and coarse walnut media. Cost out here is $26 for a 50 lb. bag and at that price I change mine often. I find the new walnut particles to have sharper edges and thus clean quicker. Anytime I go to a garage sale, I pick up all of the liquid car polish and add it to my media.
 
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